nark vs spod

nark

noun
  • An unpleasant person, especially one who makes things difficult for others. 

  • A police spy or informer. 

verb
  • To stop. 

  • To annoy or irritate. 

  • To serve or behave as a spy or informer. 

  • To complain. 

  • To watch; to observe. 

spod

noun
  • One who studies excessively and is disliked by fellow students because of it; a swot. 

  • One who uses talkers, an early form of chat room. 

  • One who wastes time on nonproductive activities online. 

  • A container used to distribute a large amount of bait in a single cast. 

verb
  • To fish using a spod. 

How often have the words nark and spod occurred in a corpus of books? (source: Google Ngram Viewer )